WASHINGTON: The recession has put US children at greater risk of everything from obesity, as parents substitute cheap fast food for healthy meals; to poverty, as adults lose jobs; to crime and instability, a report has found.

"We are in a period where, at least in economic well-being, we may be back where we were in 1975," Ruby Takanishi, head of the Foundation for Child Development which funded the 2009 Child Well-Being Index, told reporters at the launch of the report on Wednesday.

The index, which uses US government data to assess how American children are doing in areas ranging from health to community-connectedness, shows that the welfare of US children began to decline last year as the country plunged into recession, and projected it would continue its downward slide.